Authorities in East China's Zhejiang Province have beefed up security for September's G20 Summit in the provincial capital Hangzhou, with priority to be given to maintaining social stability and cracking down on cult activities, officials said.

In a report on April 5, Zhejiang provincial government said the province's public security forces will focus on 10 major tasks to ensure the security of the G20, including preventing terror attacks, checking homes for rent and building a 1 million-strong volunteer force.

More than 100 foreign leaders and over 10,000 people are expected to attend dozens of events during the G20 Summit in September, according to authorities.

During its investigation on May 12, Shiqiao sub-district office assigned 1,000 people to check over 6,000 households, collecting about 42,000 pieces of "useful information," local news portal zjol.com reported.

According to the official website of Jiangshan, Zhejiang Province, during the G20 Summit, the local government will focus on preventing cults from inciting the public and harassing summit personnel.